GB9701687D0 - Improvements in or relating to an a.c. current distribution system - Google Patents

Improvements in or relating to an a.c. current distribution system

Info

Publication number
GB9701687D0
GB9701687D0 GBGB9701687.7A GB9701687A GB9701687D0 GB 9701687 D0 GB9701687 D0 GB 9701687D0 GB 9701687 A GB9701687 A GB 9701687A GB 9701687 D0 GB9701687 D0 GB 9701687D0
Authority
GB
United Kingdom
Prior art keywords
relating
distribution system
current distribution
current
distribution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GBGB9701687.7A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tunewell Technology Ltd
Original Assignee
Tunewell Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tunewell Technology Ltd filed Critical Tunewell Technology Ltd
Priority to GBGB9701687.7A priority Critical patent/GB9701687D0/en
Publication of GB9701687D0 publication Critical patent/GB9701687D0/en
Priority to US09/355,428 priority patent/US6344699B1/en
Priority to EP98905118A priority patent/EP0956629B1/en
Priority to DE69803440T priority patent/DE69803440T2/en
Priority to PCT/GB1998/000239 priority patent/WO1998033256A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Electrical Variables (AREA)
  • Coils Of Transformers For General Uses (AREA)
GBGB9701687.7A 1997-01-28 1997-01-28 Improvements in or relating to an a.c. current distribution system Pending GB9701687D0 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GBGB9701687.7A GB9701687D0 (en) 1997-01-28 1997-01-28 Improvements in or relating to an a.c. current distribution system
US09/355,428 US6344699B1 (en) 1997-01-28 1998-01-27 A.C. current distribution system
EP98905118A EP0956629B1 (en) 1997-01-28 1998-01-27 An a.c. current distribution system
DE69803440T DE69803440T2 (en) 1997-01-28 1998-01-27 AC POWER DISTRIBUTION SYSTEM
PCT/GB1998/000239 WO1998033256A1 (en) 1997-01-28 1998-01-27 An a.c. current distribution system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9701687.7A GB9701687D0 (en) 1997-01-28 1997-01-28 Improvements in or relating to an a.c. current distribution system

Publications (1)

Publication Number Publication Date
GB9701687D0 true GB9701687D0 (en) 1997-03-19

Family

ID=10806679

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB9701687.7A Pending GB9701687D0 (en) 1997-01-28 1997-01-28 Improvements in or relating to an a.c. current distribution system

Country Status (5)

Country Link
US (1) US6344699B1 (en)
EP (1) EP0956629B1 (en)
DE (1) DE69803440T2 (en)
GB (1) GB9701687D0 (en)
WO (1) WO1998033256A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6979959B2 (en) * 2002-12-13 2005-12-27 Microsemi Corporation Apparatus and method for striking a fluorescent lamp
US7187139B2 (en) * 2003-09-09 2007-03-06 Microsemi Corporation Split phase inverters for CCFL backlight system
US7183727B2 (en) * 2003-09-23 2007-02-27 Microsemi Corporation Optical and temperature feedbacks to control display brightness
JP4658061B2 (en) * 2003-10-06 2011-03-23 マイクロセミ・コーポレーション Current distribution method and apparatus for operating a plurality of CCF lamps
US7279851B2 (en) * 2003-10-21 2007-10-09 Microsemi Corporation Systems and methods for fault protection in a balancing transformer
US7239087B2 (en) * 2003-12-16 2007-07-03 Microsemi Corporation Method and apparatus to drive LED arrays using time sharing technique
US7468722B2 (en) 2004-02-09 2008-12-23 Microsemi Corporation Method and apparatus to control display brightness with ambient light correction
WO2005099316A2 (en) * 2004-04-01 2005-10-20 Microsemi Corporation Full-bridge and half-bridge compatible driver timing schedule for direct drive backlight system
WO2005101920A2 (en) * 2004-04-07 2005-10-27 Microsemi Corporation A primary side current balancing scheme for multiple ccf lamp operation
US7755595B2 (en) 2004-06-07 2010-07-13 Microsemi Corporation Dual-slope brightness control for transflective displays
US7173382B2 (en) * 2005-03-31 2007-02-06 Microsemi Corporation Nested balancing topology for balancing current among multiple lamps
US7061183B1 (en) 2005-03-31 2006-06-13 Microsemi Corporation Zigzag topology for balancing current among paralleled gas discharge lamps
US7569998B2 (en) * 2006-07-06 2009-08-04 Microsemi Corporation Striking and open lamp regulation for CCFL controller
TW200939886A (en) 2008-02-05 2009-09-16 Microsemi Corp Balancing arrangement with reduced amount of balancing transformers
US8093839B2 (en) * 2008-11-20 2012-01-10 Microsemi Corporation Method and apparatus for driving CCFL at low burst duty cycle rates
WO2012012195A2 (en) 2010-07-19 2012-01-26 Microsemi Corporation Led string driver arrangement with non-dissipative current balancer
CN103477712B (en) 2011-05-03 2015-04-08 美高森美公司 High efficiency LED driving method
US8754581B2 (en) 2011-05-03 2014-06-17 Microsemi Corporation High efficiency LED driving method for odd number of LED strings
US9554444B2 (en) 2012-12-17 2017-01-24 OV20 Systems Device and method for retrofitting or converting or adapting series circuits

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US390990A (en) * 1888-10-09 System of electrical distribution
US3783374A (en) * 1972-04-07 1974-01-01 Sundstrand Data Control Capacitance difference detector circuit
US4772806A (en) * 1987-05-01 1988-09-20 Shay Lean Switching device for a series loop circuit
US4912372A (en) * 1988-11-28 1990-03-27 Multi Electric Mfg. Co. Power circuit for series connected loads
EP0587923A1 (en) * 1992-09-14 1994-03-23 U.R.D. Co. Ltd. High-frequency constant-current feeding system
GB9223440D0 (en) 1992-11-09 1992-12-23 Tunewell Transformers Ltd Improvements in or relating to an electrical arrangement
GB9304132D0 (en) 1993-03-01 1993-04-14 Tunewell Transformers Ltd Improvements in or relating to an electrical arrangement
US5886423A (en) * 1997-09-10 1999-03-23 Leviton Manufacturing Co., Inc. Electric series circuit

Also Published As

Publication number Publication date
DE69803440T2 (en) 2002-08-29
WO1998033256A1 (en) 1998-07-30
US6344699B1 (en) 2002-02-05
DE69803440D1 (en) 2002-02-28
EP0956629A1 (en) 1999-11-17
EP0956629B1 (en) 2002-01-09

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